for programming go to Java certification SCJP....after passing SCJP u can have various tracks....like if u have interest in web designing via servlet jsp then go to SCWCD ...or for EJB go to SCBCD or if ur interest lies in J2ME then go for SCMAD . I did SCJP , SCBCD .....thinking about SCMAD but tooo few books for this exam .
Previously I thought of sitting for oracle exams ....it have good values in it...but I dont have time to prepare this now.
Go to SUN.com u will have allllllllllllllllllllllllllllllll